Random topic here but just something I've always been curious about. We all know VNTS are much better top end and wastegates are better lower end. My mate has an A4 130bhp waste gate remapped to approx 170-180 bhp. I have a late 110 bhp VNT Octavia. I have the Octavia booked in for remap and it should sit round 140-150 bhp after remap. Realistically the Octavia should have much more top end than the A4 after remap? Easiest way to find out is simple lol but from a technical view I'm curious.

Cheers lads/Lasses

Random topic here but just something I've always been curious about. We all know VNTS are much better top end and wastegates are better lower end. My mate has an A4 130bhp waste gate remapped to approx 170-180 bhp. I have a late 110 bhp VNT Octavia. I have the Octavia booked in for remap and it should sit round 140-150 bhp after remap. Realistically the Octavia should have much more top end than the A4 after remap? Easiest way to find out is simple lol but from a technical view I'm curious.

Cheers lads/Lasses

You're comparing a PD engine against an injection pump, very different engines. With the 110 to get more than 140ish you need bigger injectors iirc.

I'm not sure what you mean by 130 waste gate,the 130PD engine has a VNT same as the 110 but as stated above a completely different fuel injection system.

As above, and I think you've got things backwards anyway.

 

The whole point of a VNT is to make the turbo spin up faster at low engine speed and hence get more low end torque for a given peak power.